1 | // |
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2 | // ******************************************************************** |
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3 | // * License and Disclaimer * |
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4 | // * * |
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9 | // * include a list of copyright holders. * |
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10 | // * * |
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11 | // * Neither the authors of this software system, nor their employing * |
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12 | // * institutes,nor the agencies providing financial support for this * |
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13 | // * work make any representation or warranty, express or implied, * |
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14 | // * regarding this software system or assume any liability for its * |
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15 | // * use. Please see the license in the file LICENSE and URL above * |
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17 | // * * |
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18 | // * This code implementation is the result of the scientific and * |
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19 | // * technical work of the GEANT4 collaboration. * |
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20 | // * By using, copying, modifying or distributing the software (or * |
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21 | // * any work based on the software) you agree to acknowledge its * |
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22 | // * use in resulting scientific publications, and indicate your * |
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23 | // * acceptance of all terms of the Geant4 Software license. * |
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24 | // ******************************************************************** |
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25 | // |
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26 | // $Id: G4InuclCollider.cc,v 1.51 2010/10/19 19:48:39 mkelsey Exp $ |
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27 | // Geant4 tag: $Name: hadr-casc-V09-03-85 $ |
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28 | // |
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29 | // 20100114 M. Kelsey -- Remove G4CascadeMomentum, use G4LorentzVector directly |
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30 | // 20100309 M. Kelsey -- Eliminate some unnecessary std::pow() |
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31 | // 20100413 M. Kelsey -- Pass G4CollisionOutput by ref to ::collide() |
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32 | // 20100418 M. Kelsey -- Move lab-frame transformation code to G4CollisonOutput |
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33 | // 20100429 M. Kelsey -- Change "photon()" to "isPhoton()" |
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34 | // 20100517 M. Kelsey -- Inherit from common base class, make other colliders |
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35 | // simple data members, consolidate code |
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36 | // 20100620 M. Kelsey -- Reorganize top level if-blocks to reduce nesting, |
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37 | // use new four-vector conservation check. |
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38 | // 20100701 M. Kelsey -- Bug fix energy-conservation after equilibrium evap, |
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39 | // pass verbosity through to G4CollisionOutput |
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40 | // 20100714 M. Kelsey -- Move conservation checking to base class, report |
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41 | // number of iterations at end |
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42 | // 20100715 M. Kelsey -- Remove all the "Before xxx" and "After xxx" |
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43 | // conservation checks, as the colliders now all do so. Move |
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44 | // local buffers outside while() loop, use new "combined add()" |
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45 | // interface for copying local buffers to global. |
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46 | // 20100716 M. Kelsey -- Drop G4IntraNucleiCascader::setInteractionCase() |
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47 | // 20100720 M. Kelsey -- Make all the collders pointer members (to reducde |
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48 | // external compile dependences). |
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49 | // 20100915 M. Kelsey -- Move post-cascade colliders to G4CascadeDeexcitation, |
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50 | // simplify operational code somewhat |
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51 | // 20100922 M. Kelsey -- Add functions to select de-excitation method; |
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52 | // default is G4CascadeDeexcitation (i.e., built-in modules) |
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53 | // 20100924 M. Kelsey -- Migrate to integer A and Z |
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54 | // 20101019 M. Kelsey -- CoVerity report: check dynamic_cast<> for null |
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55 | |
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56 | #include "G4InuclCollider.hh" |
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57 | #include "G4CascadeDeexcitation.hh" |
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58 | #include "G4PreCompoundDeexcitation.hh" |
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59 | #include "G4CollisionOutput.hh" |
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60 | #include "G4ElementaryParticleCollider.hh" |
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61 | #include "G4IntraNucleiCascader.hh" |
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62 | #include "G4InuclElementaryParticle.hh" |
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63 | #include "G4InuclNuclei.hh" |
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64 | #include "G4LorentzConvertor.hh" |
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65 | |
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66 | |
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67 | G4InuclCollider::G4InuclCollider() |
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68 | : G4CascadeColliderBase("G4InuclCollider"), |
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69 | theElementaryParticleCollider(new G4ElementaryParticleCollider), |
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70 | theIntraNucleiCascader(new G4IntraNucleiCascader), |
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71 | theDeexcitation(new G4CascadeDeexcitation) {} |
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72 | |
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73 | G4InuclCollider::~G4InuclCollider() { |
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74 | delete theElementaryParticleCollider; |
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75 | delete theIntraNucleiCascader; |
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76 | delete theDeexcitation; |
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77 | } |
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78 | |
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79 | |
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80 | // Select post-cascade processing (default will be CascadeDeexcitation) |
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81 | |
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82 | void G4InuclCollider::useCascadeDeexcitation() { |
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83 | delete theDeexcitation; |
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84 | theDeexcitation = new G4CascadeDeexcitation; |
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85 | } |
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86 | |
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87 | void G4InuclCollider::usePreCompoundDeexcitation() { |
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88 | delete theDeexcitation; |
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89 | theDeexcitation = new G4PreCompoundDeexcitation; |
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90 | } |
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91 | |
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92 | |
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93 | // Main action |
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94 | |
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95 | void G4InuclCollider::collide(G4InuclParticle* bullet, G4InuclParticle* target, |
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96 | G4CollisionOutput& globalOutput) { |
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97 | if (verboseLevel) G4cout << " >>> G4InuclCollider::collide" << G4endl; |
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98 | |
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99 | // Initialize colliders verbosity |
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100 | theElementaryParticleCollider->setVerboseLevel(verboseLevel); |
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101 | theIntraNucleiCascader->setVerboseLevel(verboseLevel); |
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102 | theDeexcitation->setVerboseLevel(verboseLevel); |
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103 | |
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104 | output.setVerboseLevel(verboseLevel); |
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105 | DEXoutput.setVerboseLevel(verboseLevel); |
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106 | |
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107 | const G4int itry_max = 1000; |
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108 | |
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109 | // Particle-on-particle collision; no nucleus involved |
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110 | if (useEPCollider(bullet,target)) { |
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111 | if (verboseLevel > 2) |
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112 | G4cout << " InuclCollider -> particle on particle collision" << G4endl; |
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113 | |
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114 | theElementaryParticleCollider->collide(bullet, target, globalOutput); |
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115 | return; |
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116 | } |
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117 | |
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118 | interCase.set(bullet,target); // Classify collision type |
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119 | if (verboseLevel > 2) { |
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120 | G4cout << " InuclCollider -> inter case " << interCase.code() << G4endl; |
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121 | } |
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122 | |
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123 | if (!interCase.valid()) { |
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124 | if (verboseLevel > 1) |
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125 | G4cerr << " InuclCollider -> no collision possible " << G4endl; |
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126 | |
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127 | globalOutput.trivialise(bullet, target); |
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128 | return; |
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129 | } |
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130 | |
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131 | // Target must be a nucleus |
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132 | G4InuclNuclei* ntarget = dynamic_cast<G4InuclNuclei*>(interCase.getTarget()); |
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133 | if (!ntarget) { |
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134 | G4cerr << " InuclCollider -> ERROR target is not a nucleus " << G4endl; |
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135 | |
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136 | globalOutput.trivialise(bullet, target); |
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137 | return; |
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138 | } |
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139 | |
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140 | G4int btype = 0; |
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141 | G4int ab = 0; |
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142 | G4int zb = 0; |
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143 | |
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144 | if (interCase.hadNucleus()) { // particle with nuclei |
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145 | G4InuclElementaryParticle* pbullet = |
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146 | dynamic_cast<G4InuclElementaryParticle*>(interCase.getBullet()); |
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147 | if (!pbullet) { |
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148 | G4cerr << " InuclCollider -> ERROR bullet is not a hadron " << G4endl; |
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149 | globalOutput.trivialise(bullet, target); |
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150 | return; |
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151 | } else if (pbullet->isPhoton()) { |
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152 | G4cerr << " InuclCollider -> can not collide with photon " << G4endl; |
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153 | globalOutput.trivialise(bullet, target); |
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154 | return; |
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155 | } else { |
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156 | btype = pbullet->type(); |
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157 | } |
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158 | } else { // nuclei with nuclei |
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159 | G4InuclNuclei* nbullet = |
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160 | dynamic_cast<G4InuclNuclei*>(interCase.getBullet()); |
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161 | if (!nbullet) { |
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162 | G4cerr << " InuclCollider -> ERROR bullet is not a nucleus " << G4endl; |
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163 | globalOutput.trivialise(bullet, target); |
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164 | return; |
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165 | } |
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166 | |
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167 | ab = nbullet->getA(); |
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168 | zb = nbullet->getZ(); |
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169 | } |
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170 | |
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171 | G4LorentzConvertor convertToTargetRestFrame(bullet, ntarget); |
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172 | G4double ekin = convertToTargetRestFrame.getKinEnergyInTheTRS(); |
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173 | |
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174 | if (verboseLevel > 3) G4cout << " ekin in trs " << ekin << G4endl; |
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175 | |
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176 | if (!inelasticInteractionPossible(bullet, target, ekin)) { |
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177 | if (verboseLevel > 3) |
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178 | G4cout << " InuclCollider -> inelastic interaction is impossible\n" |
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179 | << " due to the coulomb barirer " << G4endl; |
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180 | |
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181 | globalOutput.trivialise(bullet, target); |
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182 | return; |
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183 | } |
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184 | |
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185 | // Generate interaction secondaries in rest frame of target nucleus |
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186 | convertToTargetRestFrame.toTheTargetRestFrame(); |
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187 | if (verboseLevel > 3) { |
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188 | G4cout << " degenerated? " << convertToTargetRestFrame.trivial() |
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189 | << G4endl; |
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190 | } |
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191 | |
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192 | G4LorentzVector bmom; // Bullet is along local Z |
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193 | bmom.setZ(convertToTargetRestFrame.getTRSMomentum()); |
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194 | |
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195 | // Need to make copy of bullet with momentum realigned |
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196 | G4InuclParticle* zbullet = 0; |
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197 | if (interCase.hadNucleus()) |
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198 | zbullet = new G4InuclElementaryParticle(bmom, btype); |
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199 | else |
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200 | zbullet = new G4InuclNuclei(bmom, ab, zb); |
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201 | |
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202 | G4int itry = 0; |
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203 | while (itry < itry_max) { |
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204 | itry++; |
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205 | if (verboseLevel > 2) |
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206 | G4cout << " IntraNucleiCascader itry " << itry << G4endl; |
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207 | |
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208 | globalOutput.reset(); // Clear buffers for this attempt |
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209 | output.reset(); |
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210 | DEXoutput.reset(); |
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211 | |
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212 | theIntraNucleiCascader->collide(zbullet, target, output); |
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213 | |
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214 | if (verboseLevel > 1) G4cout << " After Cascade " << G4endl; |
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215 | |
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216 | // FIXME: The code below still does too much copying! Would rather |
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217 | // remove initial fragment from list (or get it a different way) |
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218 | DEXoutput.addOutgoingParticles(output.getOutgoingParticles()); |
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219 | |
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220 | if (output.numberOfOutgoingNuclei() == 1) { // Residual fragment |
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221 | // FIXME: Making a copy here because of constness issues |
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222 | G4InuclNuclei recoil_nucleus = output.getOutgoingNuclei()[0]; |
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223 | theDeexcitation->collide(0, &recoil_nucleus, DEXoutput); |
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224 | } |
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225 | |
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226 | if (verboseLevel > 2) |
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227 | G4cout << " itry " << itry << " finished, moving to lab frame" << G4endl; |
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228 | |
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229 | // convert to the LAB frame and add to final result |
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230 | DEXoutput.boostToLabFrame(convertToTargetRestFrame); |
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231 | globalOutput.add(DEXoutput); |
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232 | |
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233 | // Adjust final state particles to balance momentum and energy |
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234 | // FIXME: This should no longer be necessary! |
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235 | globalOutput.setOnShell(bullet, target); |
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236 | if (globalOutput.acceptable()) { |
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237 | if (verboseLevel) |
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238 | G4cout << " InuclCollider output after trials " << itry << G4endl; |
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239 | return; |
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240 | } |
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241 | } // while (itry < itry_max) |
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242 | |
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243 | if (verboseLevel) { |
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244 | G4cout << " InuclCollider -> can not generate acceptable inter. after " |
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245 | << itry_max << " attempts " << G4endl; |
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246 | } |
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247 | |
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248 | globalOutput.trivialise(bullet, target); |
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249 | return; |
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250 | } |
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